7 mm Mauser reloading

Ryan.30 · October 1, 2010, 09:17 PM

Any body have any tips or info I've never reloaded 7mm Mauser before

rogn · October 1, 2010, 11:51 PM

I prefer slower burning powders like H4350 and H4381sc. A caseful(figuratively) of these with most bullet wgts will give respectable velocities when used in a good modern bolt gun. The 140 grain shoot flat and are a good choice for deer sized game. I always liked the Hornady 154 gr bullet. you can acheive good velocities and the bullet does well down range. other than these preferences it is a good and easy cartridge to load for. The only caveat is the reality that SAAMI specs are too generous and case expansion may shorten case lifr when you FL size. Neck sizeing w/ a Lee collet will help accuracy and extend case life. It should prove quite accurate, and recoil is quite tolerable. Some manuals will provide good loads wiyth the powders Ive mentioned.

thekyrifleman · October 2, 2010, 11:17 AM

I've used IMR 4350..50gr with 140 gr Sierra Pro Hunters...2850fps, 3/4 inch groups. Kills deer very effectively. I also neck size. Rifle is a customized 1908 Argentine. Working on a load with Sierra 160 grainers now. Groupings look to be similar.

Ryan.30 · October 3, 2010, 02:53 AM

Alright thank you for the info.

HiBC · October 3, 2010, 01:31 PM

Another powder that also works well is Re-19.Some rifles are stronger than others.Even the Rolling Block was chambered for 7x57.This performance level for a 7x57 is safe in 98 Mausers and modern sporting rifles.
If it is an older cock on closing Mauser or equivalent,there are more conservative limits.

458winshooter · October 5, 2010, 12:25 AM

Consider H-414, Varget and IMR-4064 also.I have an old Serbian Mauser that still has its 29 in barrel so I can load starting loads and still get good velocity with these powders under a 139 gr Hornady or a 160 gr Speer.Be mindful that alot of data out there is ment for modern rifles at higher pressures than the 7MM was originally designed for and double check to see if the data is safe for your gun.Its a great caliber and can and has taken just about anything that people wanted to shoot at if loaded right.Be safe.

k in AR · October 5, 2010, 06:55 PM

I have had good results with H4350 (and really close with IMR4350) pushing a 140 gr bullet. I really like the BarnsX & XBT bullets, and the Nosler Partition, both at 140gr.

Scorch · October 6, 2010, 03:12 PM

The first question I would have is what model of rifle are you loading for? There are many old rifles chambered for 7X57 that require lower pressure loads in order to be safe. If you will tell us what model rifle you have we can share some load data with you.

Also, keep in mind that many 7X57 rifles have terrifically long throats on them because the common factory loads for many years was a very long 175 gr RN. Because of this, your rifle may not shoot very well with spitzer bullets.

Other than these two issues, loading for the 7X57 is not overly difficult. I load IMR4320 for my 7X57, it works well with bullets up to 140 gr. I also load 760 and IMR4350 for heavier bullets. My Ruger 77 in 7X57 shoots about 1-1/2" at 100 yds. It kills very well.

Ideal Tool · October 6, 2010, 08:55 PM

Hello, guys! this is my first post on forum & it looks to be a very interesting and informative one! I am glad to see a 7x57 site. I have a pre-war (WW1)
7x57 sporter. 24"brl, 9/16" at muzzle with full length matted rib. gold bead front, folding two leaf rear, with claw mnts with Zeiss 4X. Scope has pointed stadia at 3:00, 9:00, & 6:00. These don't cross, but have small space between. Rifle came from Alaska, someone did beautiful glassbedding job. Bore is bright & perfect. Has fancy horn triggerguard & buttplate. Dbl. set triggers, action & screws engraved & case-colored. Bore slugged .2883".
I am a cast-bullet fanatic, & have always wanted a rifle in this caliber, so I had a few moulds for just such an occasion...But every bullet pushed in throat showed light..lots of it around them. I finally ordered custom nose-pour moulds from Fred Leeth at Pioneer Products. One is based on the old Ideal 311041 and weighs 150gr. The other is based on a 1905 .30 design, & came out a little heavy at 180grs. I have only tried the 150gr. so far with H4227 & H4895. It seems to like heavy loads. My work & weather have prevented me from more range time. But so far groups around 11/4-11/2" at 100yd. This rifle has the fast twist for the heavy 175gr. load, & I am hopeing the heaver slugs shoot better. I am after accuracy, so have seated bullets out to just shy of de-bulleting. I am sizing to .289 & using Lyman Super Moly lube. I have never had a light sporter before & was wondering what level of accuracy I could expect? Any suggestions? Thanks guys!

Ideal Tool · October 6, 2010, 09:01 PM

Hello, guys! this is my first post on forum & it looks to be a very interesting and informative one! I am glad to see a 7x57 site. I have a pre-war (WW1)
7x57 sporter. 24"brl, 9/16" at muzzle with full length matted rib. gold bead front, folding two leaf rear, with claw mnts with Zeiss 4X. Scope has pointed stadia at 3:00, 9:00, & 6:00. These don't cross, but have small space between. Rifle came from Alaska, someone did beautiful glassbedding job. Bore is bright & perfect. Has fancy horn triggerguard & buttplate. Dbl. set triggers, action & screws engraved & case-colored. Bore slugged .2883".
I am a cast-bullet fanatic, & have always wanted a rifle in this caliber, so I had a few moulds for just such an occasion...But every bullet pushed in throat showed light..lots of it around them. I finally ordered custom nose-pour moulds from Fred Leeth at Pioneer Products. One is based on the old Ideal 311041 and weighs 150gr. The other is based on a 1905 .30 design, & came out a little heavy at 180grs. I have only tried the 150gr. so far with H4227 & H4895. It seems to like heavy loads. My work & weather have prevented me from more range time. But so far groups around 11/4-11/2" at 100yd. This rifle has the fast twist for the heavy 175gr. load, & I am hopeing the heaver slugs shoot better. I am after accuracy, so have seated bullets out to just shy of de-bulleting. I am sizing to .289 & using Lyman Super Moly lube. I have never had a light sporter before & was wondering what level of accuracy I could expect? Any suggestions? Thanks guys!

October 1, 2010, 09:17 PM	#1
Ryan.30 Member Join Date: September 19, 2010 Posts: 39	7 mm Mauser reloading Any body have any tips or info I've never reloaded 7mm Mauser before

October 3, 2010, 01:31 PM	#5
HiBC Senior Member Join Date: November 13, 2006 Posts: 8,350	Another powder that also works well is Re-19.Some rifles are stronger than others.Even the Rolling Block was chambered for 7x57.This performance level for a 7x57 is safe in 98 Mausers and modern sporting rifles. If it is an older cock on closing Mauser or equivalent,there are more conservative limits. Last edited by HiBC; October 3, 2010 at 01:41 PM.

October 5, 2010, 12:25 AM	#6
458winshooter Senior Member Join Date: June 16, 2008 Location: Transplanted to Ridgeland,SC Posts: 607	7MM mauser Consider H-414, Varget and IMR-4064 also.I have an old Serbian Mauser that still has its 29 in barrel so I can load starting loads and still get good velocity with these powders under a 139 gr Hornady or a 160 gr Speer.Be mindful that alot of data out there is ment for modern rifles at higher pressures than the 7MM was originally designed for and double check to see if the data is safe for your gun.Its a great caliber and can and has taken just about anything that people wanted to shoot at if loaded right.Be safe.

October 6, 2010, 03:12 PM	#8
Scorch Senior Member Join Date: February 13, 2006 Location: Washington state Posts: 15,249	The first question I would have is what model of rifle are you loading for? There are many old rifles chambered for 7X57 that require lower pressure loads in order to be safe. If you will tell us what model rifle you have we can share some load data with you. Also, keep in mind that many 7X57 rifles have terrifically long throats on them because the common factory loads for many years was a very long 175 gr RN. Because of this, your rifle may not shoot very well with spitzer bullets. Other than these two issues, loading for the 7X57 is not overly difficult. I load IMR4320 for my 7X57, it works well with bullets up to 140 gr. I also load 760 and IMR4350 for heavier bullets. My Ruger 77 in 7X57 shoots about 1-1/2" at 100 yds. It kills very well. __________________ Never try to educate someone who resists knowledge at all costs. But what do I know? Summit Arms Services

October 6, 2010, 08:55 PM	#9
Ideal Tool Junior member Join Date: October 6, 2010 Location: Michigan Posts: 1,080	7X57 Mauser Sporter Hello, guys! this is my first post on forum & it looks to be a very interesting and informative one! I am glad to see a 7x57 site. I have a pre-war (WW1) 7x57 sporter. 24"brl, 9/16" at muzzle with full length matted rib. gold bead front, folding two leaf rear, with claw mnts with Zeiss 4X. Scope has pointed stadia at 3:00, 9:00, & 6:00. These don't cross, but have small space between. Rifle came from Alaska, someone did beautiful glassbedding job. Bore is bright & perfect. Has fancy horn triggerguard & buttplate. Dbl. set triggers, action & screws engraved & case-colored. Bore slugged .2883". I am a cast-bullet fanatic, & have always wanted a rifle in this caliber, so I had a few moulds for just such an occasion...But every bullet pushed in throat showed light..lots of it around them. I finally ordered custom nose-pour moulds from Fred Leeth at Pioneer Products. One is based on the old Ideal 311041 and weighs 150gr. The other is based on a 1905 .30 design, & came out a little heavy at 180grs. I have only tried the 150gr. so far with H4227 & H4895. It seems to like heavy loads. My work & weather have prevented me from more range time. But so far groups around 11/4-11/2" at 100yd. This rifle has the fast twist for the heavy 175gr. load, & I am hopeing the heaver slugs shoot better. I am after accuracy, so have seated bullets out to just shy of de-bulleting. I am sizing to .289 & using Lyman Super Moly lube. I have never had a light sporter before & was wondering what level of accuracy I could expect? Any suggestions? Thanks guys!

October 1, 2010, 11:51 PM	#2
rogn Senior Member Join Date: December 25, 2005 Posts: 203	I prefer slower burning powders like H4350 and H4381sc. A caseful(figuratively) of these with most bullet wgts will give respectable velocities when used in a good modern bolt gun. The 140 grain shoot flat and are a good choice for deer sized game. I always liked the Hornady 154 gr bullet. you can acheive good velocities and the bullet does well down range. other than these preferences it is a good and easy cartridge to load for. The only caveat is the reality that SAAMI specs are too generous and case expansion may shorten case lifr when you FL size. Neck sizeing w/ a Lee collet will help accuracy and extend case life. It should prove quite accurate, and recoil is quite tolerable. Some manuals will provide good loads wiyth the powders Ive mentioned.

October 2, 2010, 11:17 AM	#3
thekyrifleman Senior Member Join Date: December 29, 2007 Location: Northern Ky Posts: 254	I've used IMR 4350..50gr with 140 gr Sierra Pro Hunters...2850fps, 3/4 inch groups. Kills deer very effectively. I also neck size. Rifle is a customized 1908 Argentine. Working on a load with Sierra 160 grainers now. Groupings look to be similar.

October 3, 2010, 02:53 AM	#4
Ryan.30 Member Join Date: September 19, 2010 Posts: 39	Alright thank you for the info.

October 5, 2010, 06:55 PM	#7
k in AR Senior Member Join Date: October 13, 1999 Location: Arkansas USA Posts: 436	I have had good results with H4350 (and really close with IMR4350) pushing a 140 gr bullet. I really like the BarnsX & XBT bullets, and the Nosler Partition, both at 140gr.

October 6, 2010, 09:01 PM	#10
Ideal Tool Junior member Join Date: October 6, 2010 Location: Michigan Posts: 1,080	7X57 Mauser Sporter Hello, guys! this is my first post on forum & it looks to be a very interesting and informative one! I am glad to see a 7x57 site. I have a pre-war (WW1) 7x57 sporter. 24"brl, 9/16" at muzzle with full length matted rib. gold bead front, folding two leaf rear, with claw mnts with Zeiss 4X. Scope has pointed stadia at 3:00, 9:00, & 6:00. These don't cross, but have small space between. Rifle came from Alaska, someone did beautiful glassbedding job. Bore is bright & perfect. Has fancy horn triggerguard & buttplate. Dbl. set triggers, action & screws engraved & case-colored. Bore slugged .2883". I am a cast-bullet fanatic, & have always wanted a rifle in this caliber, so I had a few moulds for just such an occasion...But every bullet pushed in throat showed light..lots of it around them. I finally ordered custom nose-pour moulds from Fred Leeth at Pioneer Products. One is based on the old Ideal 311041 and weighs 150gr. The other is based on a 1905 .30 design, & came out a little heavy at 180grs. I have only tried the 150gr. so far with H4227 & H4895. It seems to like heavy loads. My work & weather have prevented me from more range time. But so far groups around 11/4-11/2" at 100yd. This rifle has the fast twist for the heavy 175gr. load, & I am hopeing the heaver slugs shoot better. I am after accuracy, so have seated bullets out to just shy of de-bulleting. I am sizing to .289 & using Lyman Super Moly lube. I have never had a light sporter before & was wondering what level of accuracy I could expect? Any suggestions? Thanks guys!